10kv switch incoming line pt operation auxiliary trolley

Abstract

The utility model discloses a 10kV switch incoming line PT operation auxiliary trolley belongs to PT operation auxiliary tool technical field, including frame and bracket, the frame lower surface is provided with directional wheel and universal wheel, the frame rear side is provided with the handrail, the bracket sets up on the frame and can go up and down, and it still includes lifting rod, hand -operated mechanism and multi -functional board, the rear side of frame is provided with lifting rod, is provided with the screw thread on the lifting rod, the rear side of bracket is provided with the sliding block of lifting rod screw connection, sets up hand -operated mechanism on the frame, hand -operated mechanism is connected with lifting rod, the front side of bracket articulates multi -functional board, the utility model discloses can replace traditional pure manpower to transport PT's mode, avoids the difficulty of handling and the risk of sliding down caused by PT equipment too heavy, reduces the physical consumption of operator, reduces the personal injury and equipment damage hidden danger, through fixed PT equipment, ensures the stability of equipment in the process of transportation, prevents accidental sliding or toppling.

Description

Technical Field

[0001] This utility model relates to a 10kV switch incoming line PT operation auxiliary trolley, belonging to the technical field of PT operation auxiliary tools.

[0002] Background Technology

[0003] 10kV switchgear is an important component of the power plant's auxiliary power system. The safe operation of 10kV switches is a crucial guarantee for the safe production of power plants, while the safe operation of the 10kV auxiliary power system is an important technical means to provide this guarantee.

[0004] In 10kV systems, PTs are key devices for ensuring accurate voltage measurement and safe control. Existing common auxiliary operating tools for 10kV incoming line PTs (in power systems, PT refers to voltage transformers, usually located in the PT cabinet of the switchgear, forming a protection unit with fuses, surge arresters, etc., to monitor the incoming bus or line voltage; PTs require regular maintenance or replacement) consist of a simple board as an auxiliary rail for pushing in / pulling out. Due to the very low operating position and the weight of the PT, operation is extremely difficult, and post-operation maintenance is particularly challenging. Although the PT is equipped with pulleys at the bottom, these pulleys are very small, and the ground may not be completely flat, often resulting in the PT being unable to slide during operation. Previously, such situations required purely manual transfer, posing a significant challenge to operators and increasing the risk of slippage during transfer, endangering personal safety and equipment.

[0005] Some existing technologies have designed PT operation auxiliary trolleys to assist in the transfer and installation of PTs, but their docking with switchgear requires pins and pre-drilled holes on the switchgear, making operation cumbersome. Secondly, in existing technologies, the height adjustment of the trolley's platform is either done manually on both sides or via hydraulic mechanisms; the former is inconvenient, and the latter makes the structure overly complex and costly. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a 10kV switch incoming line PT operation auxiliary trolley.

[0007] The technical solution adopted in this utility model is as follows: A 10kV switchgear incoming line PT operation auxiliary trolley is designed, including a frame and a bracket. The frame is equipped with directional wheels and omnidirectional wheels with brakes. A handrail is provided at the rear of the frame, controlling the trolley's movement. Braking is achieved through the brakes on the omnidirectional wheels. The bracket is mounted on the frame and can be raised and lowered, facilitating the loading and unloading of the PT. It also includes a lifting rod, a hand crank mechanism, and a multi-functional board. A slide rail is provided at the rear of the frame, within which the lifting rod is rotatably mounted. The lifting rod has threads. A slider, threadedly connected to the lifting rod, is located at the rear of the bracket and is positioned within the slide rail. Rotation of the lifting rod moves the slider up and down. A hand crank mechanism is provided on the frame, connected to the lifting rod. Manual control of the lifting rod's rotation via the hand crank mechanism raises and lowers the bracket. This structure allows for simple and convenient control of the bracket's raising and lowering, facilitating PT operation assistance.

[0008] More specifically, the bracket has a multi-functional panel hinged to its front side. This panel can be unfolded parallel to the upper surface of the bracket or folded upwards at a 90° angle and locked. When unfolded, the front end of the multi-functional panel extends out of the frame. The width of the multi-functional panel is the same as the opening of the PT cabinet to be installed. When docking with the PT cabinet is required, the multi-functional panel is unfolded and inserted into the PT cabinet, allowing for quick and precise docking of the trolley and the PT cabinet. The docking is convenient, quick, and easy to operate, and there is no need to drill docking holes on the PT cabinet. The left and right sides of the front end of the multi-functional panel are chamfered to form sharp points, facilitating quick docking and insertion. When it is necessary to transfer the PT, the multi-functional panel is folded upwards at a 90° angle and locked to protect the PT and prevent it from slipping.

[0009] Furthermore, the frame includes a base frame and uprights. The uprights are respectively installed on the rear, left, and right sides of the base frame. The bracket is secured between the three sets of uprights to prevent it from easily tilting. The lifting rod and hand crank mechanism are installed on the upright located on the rear side of the base frame. The overall frame structure is simple and easy to manufacture, and facilitates the installation of other components.

[0010] Furthermore, the support frame includes two parallel columns and a crossbar connecting the upper ends of the two columns, forming a slide rail between the two columns. The rear, left, and right sides of the bracket are respectively provided with sliders corresponding to the slide rail, and the slider on the rear side of the bracket is provided with a threaded hole for threaded connection with the lifting rod. This structure makes the lifting of the bracket more stable and reliable.

[0011] Furthermore, handrails are provided on both sides of the horizontal bar of the rear upright of the base frame, and the handrails are covered with protective sleeves for easy gripping and operation. The horizontal bars of the left and right uprights of the base frame extend backward and connect with the handrails. The above structure forms a simple grip structure, which facilitates the operation of the trolley.

[0012] Furthermore, a seat plate is provided on the crossbar of the rear upright of the base frame, and seat plates are respectively provided on the front and rear sides of the crossbar. The hand-crank mechanism is installed on the seat plate, which is convenient for installation. The lower end of the lifting rod is rotatably connected to the base frame, and the upper end passes through the crossbar of the rear upright of the base frame and is connected to the hand-crank mechanism. Through the above structure, a stable connection is formed between the hand-crank mechanism and the lifting rod.

[0013] Furthermore, the hand-crank mechanism includes a turbine housing and a hand crank located on one side of the turbine housing. The turbine inside the turbine housing is connected to the lifting rod, and the worm gear is connected to the hand crank. This structure forms a reversing transmission structure, facilitating operation. Moreover, this structure possesses strong spatial adaptability and self-locking safety.

[0014] Furthermore, the bracket includes a frame and a plate mounted on the frame. A step is formed between the front side of the frame and the vehicle frame. The multi-functional plate is hinged to the front side of the frame and has a pin on it. When the multi-functional plate is unfolded, it rests against the step; when it is folded upwards at 90°, it rests against the front end of the frame and the plate and is locked by the pin. This structure allows the multi-functional plate to rotate within a 90° range only, and after rotation, it can be limited, enabling it to perform different functions in different states.

[0015] Furthermore, the front side of the support frame is provided with multiple first ear plates, and the multi-functional plate is provided with second ear plates corresponding to the first ear plates one by one. A hinge rod is provided between the first ear plates and the second ear plates, and the first ear plates and the second ear plates are rotatably connected by the hinge rod. The above structure realizes the hinge of the multi-functional plate, and after the second ear plate rotates, it is easily and accurately limited by the step formed between the front side of the support frame and the vehicle frame, making the switching of the state of the multi-functional plate faster and more convenient.

[0016] Furthermore, an integrated plate is provided at the rear end of the multi-functional board, and multiple stiffening plates are provided between the integrated plate and the multi-functional board to improve the structural strength of the multi-functional board. The second ear plate is provided on the integrated plate for a stable connection. The pin is provided on the integrated plate, and the frame is provided with a locking hole for receiving the pin. When the multi-functional board is folded upward at 90°, it abuts against the front end of the support frame and the support plate and is locked by inserting the pin into the locking hole.

[0017] Furthermore, the pin includes a rod, a limiting ring, and a handle. The handle is provided at one end of the rod, forming a T-shaped structure for easy operation of the pin. Two limiting rings are provided in the middle of the rod. The integrated plate has a socket, and the rod of the pin passes through the socket and can slide back and forth. The limiting rings are respectively provided on the rods on both sides of the socket to limit the pin.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model uses a lifting rod and a slider to control the lifting and lowering of the bracket by simply adjusting the rotation of the lifting rod on one side of the handrail. The structure is simple and the operation is convenient. By adjusting the multi-functional panel to different states, it can be precisely connected to the PT cabinet or protect the PT on the bracket. The mechanized movement of PT equipment avoids the risk of falling or collision caused by manual handling. The operation is simple, and the use of this application to assist in the transfer and installation of PT is more convenient.

[0020] This invention can replace the traditional purely manual transportation method, avoiding the difficulties in handling and the risk of slippage caused by the excessive weight of the PT equipment, reducing the physical exertion of operators, and minimizing the risk of personal injury and equipment damage. The trolley of this invention moves smoothly and controllably. The height of the support frame can be adjusted via a lifting rod to flexibly match the height of the PT cabinet door sill (e.g., raising the platform to extend into the cabinet, lowering it to be flush and fixed), reducing manual adjustment time and eliminating the need for repeated handling of the PT equipment, achieving "one-time loading, full-process transportation." The PT equipment does not need to be unloaded from the auxiliary trolley and can be directly used for the pre-energization push-in operation, shortening the operation cycle and improving the efficiency of the 10kV busbar power outage and restoration process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the isometric view (folding of the multi-functional board) of this utility model.

[0023] Figure 2 This is a schematic diagram of the isometric view (folding of the multi-functional board) of this utility model.

[0024] Figure 3 This is a schematic diagram of the isometric view of the present invention (with the multi-functional panel unfolded and the bracket raised).

[0025] Figure 4 This is a schematic diagram of the vehicle frame of this utility model.

[0026] Figure 5 This is a schematic diagram of the multifunctional board and its auxiliary structures of this utility model.

[0027] In the diagram: 1. Fixed wheel; 2. Universal wheel; 3. Lifting rod; 4. Hand crank mechanism; 5. Multifunctional panel; 6. Slide rail; 7. Slider; 8. Base frame; 9. Upright frame; 10. Column; 11. Crossbar; 12. Handrail; 13. Protective sleeve; 14. Seat plate; 15. Turbine box; 16. Hand crank; 17. Support frame; 18. Support plate; 19. Step; 20. Pin; 21. First ear plate; 22. Second ear plate; 23. Integrated plate; 24. Rib plate; 25. Lock hole; 26. Insert rod; 27. Limiting ring; 28. Handle. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example 1

[0031] like Figures 1-5 As shown, a 10kV switch incoming line PT operation auxiliary trolley includes a frame and a bracket. The frame is equipped with directional wheels 1 and omnidirectional wheels 2 with brakes. Specifically, directional wheels 1 are located on the left and right sides of the front end of the frame, and omnidirectional wheels 2 with brakes are located on the left and right sides of the rear end of the frame. A handrail is located on the rear side of the frame. The bracket is mounted on the frame and can be raised and lowered. The PT operation auxiliary trolley in this embodiment also includes a lifting rod 3, a hand crank mechanism 4, and a multi-functional board 5. A slide rail 6 is located on the rear side of the frame, within which the lifting rod 3 is rotatably mounted. The lifting rod 3 has threads. A slider 7, threadedly connected to the lifting rod 3, is located on the rear side of the bracket. The slider 7 slides within the slide rail 6. The hand crank mechanism 4 is mounted on the frame and connected to the lifting rod 3. The lifting rod 3 is manually rotated via the hand crank mechanism 4, thereby raising and lowering the bracket.

[0032] The bracket is hinged to a multi-functional plate 5 at its front. The multi-functional plate 5 can be unfolded parallel to the upper surface of the bracket or folded upwards at a 90° angle and locked. When unfolded parallel to the upper surface of the bracket, the multi-functional plate 5 cannot rotate further downwards; when folded upwards at a 90° angle and locked, it cannot rotate at any angle. When unfolded, the front end of the multi-functional plate 5 extends out of the frame, facilitating insertion into the PT cabinet for docking. The width of the multi-functional plate 5 is the same as the opening of the PT cabinet to be installed. The left and right sides of the front end of the multi-functional plate 5 are chamfered. In this embodiment, the upward folding of the multi-functional plate 5 limits the position of the PT on the bracket. Alternatively, a limiting hole can be provided on the bracket, and a screw can be inserted between the PT and the limiting hole to limit the PT's position.

[0033] Example 2

[0034] This embodiment further refines and optimizes the frame structure based on Embodiment 1. In this embodiment, the frame includes a base frame 8 and uprights 9. Uprights 9 are respectively arranged on the rear, left, and right sides of the base frame 8. The bracket is secured between the three sets of uprights 9. The lifting rod 3 and the hand crank mechanism 4 are installed on the upright 9 located on the rear side of the base frame 8, i.e., the slide rail 6 is arranged on the upright 9. More specifically, the upright 9 includes two parallel columns 10 and a crossbar 11 connecting the upper ends of the two columns 10. The slide rail 6 is formed between the two columns 10. The rear, left, and right sides of the bracket are respectively provided with sliders 7 corresponding to the slide rail 6. The slider 7 on the rear side of the bracket is provided with a threaded hole for threaded connection with the lifting rod 3. Through the cooperation of the uprights 9 on the left and right sides of the base frame 8 and the sliders 7, the forward and backward tilt of the bracket is overcome. Through the cooperation of the uprights 9 on the rear side of the base frame 8 and the sliders 7, the left and right tilt of the bracket is overcome. At the same time, the uprights 9 on the left and right sides of the base frame 8 can also overcome the left and right tilt of the bracket, so that the bracket can be raised and lowered vertically. Understandably, the uprights 9 on the left and right sides of the base frame 8 can be placed at any position in the front, middle and rear sections of both sides.

[0035] Based on the above structure, the handrail structure is further refined. Handrails 12 (i.e., handrails) are respectively provided on the left and right sides of the horizontal bar 11 of the rear upright 9 of the bottom frame 8. The handrails 12 are covered with protective sleeves 13. The horizontal bars 11 of the left and right upright 9 of the bottom frame 8 extend backward and connect with the handrails 12 in an integrated manner, which has higher structural strength and makes it easier to operate the trolley.

[0036] The specific installation structure of the hand crank mechanism 4 is as follows: a seat plate 14 is provided on the crossbar 11 of the rear upright 9 of the base frame 8. Seat plates 14 are provided on both the front and rear sides of the crossbar 11, and multiple reinforcing support plates are provided between the lower side of the seat plate 14 and the crossbar 11. The hand crank mechanism 4 is installed on the seat plate 14 via bolt assemblies. The lower end of the lifting rod 3 is rotatably connected to the base frame 8, and the upper end passes through the crossbar 11 of the rear upright 9 of the base frame 8 and connects to the hand crank mechanism 4. It is understood that no threads are provided at the connection points between the upper and lower ends of the lifting rod 3 and the frame. The aforementioned hand crank mechanism 4 adopts a worm gear structure. Specifically, the hand crank mechanism 4 includes a turbine housing 15 and a hand crank 16 located on one side of the turbine housing 15. The turbine inside the turbine housing 15 is connected to the lifting rod 3 to drive its rotation. The worm gear is connected to the hand crank 16. Rotating the hand crank 16 drives the worm gear to rotate, which in turn drives the turbine gear to rotate.

[0037] Example 3

[0038] This embodiment is based on Embodiment 2, further refining and optimizing the bracket structure. The bracket in this embodiment includes a bracket frame 17 and a support plate 18 disposed on the bracket frame 17. The bracket frame 17 is smaller than the bottom frame 8 of the vehicle frame. The support plate 18 covers the upper surface of the bracket frame 17. A step 19 is formed between the front side of the bracket frame 17 and the vehicle frame. The multi-functional plate 5 is hinged to the front side of the bracket frame 17 and has a pin 20 disposed thereon. When the multi-functional plate 5 is unfolded, it abuts against the step 19, restricting its further rotation. When it is folded upwards at 90°, it abuts against the front end of the bracket frame 17 and the support plate 18 and is locked by the pin 20. More specifically, the hinge structure is as follows: multiple first ear plates 21 are provided on the front side of the support frame 17, and second ear plates 22 corresponding to the first ear plates 21 are provided on the multifunctional plate 5. The ends of the second ear plates 22 are semi-circular plates to facilitate rotation. A hinge rod is provided between the first ear plates 21 and the second ear plates 22. The first ear plates 21 and the second ear plates 22 are rotatably connected by the hinge rod. The hinge rod can be a common small round rod.

[0039] An integrated plate 23 is provided at the rear end of the multi-functional plate 5. Multiple stiffening plates 24 are provided between the integrated plate 23 and the multi-functional plate 5. A second ear plate 22 is provided on the integrated plate 23. The second ear plate 22 and the stiffening plates 24 are respectively provided on both sides of the integrated plate 23. A pin 20 is provided on the integrated plate 23. A locking hole 25 for receiving the pin 20 is provided on the frame. The pin 20 cooperates with the locking hole to lock the multi-functional plate 5. One structure of the pin 20 is as follows: the pin 20 includes a rod 26, a limiting ring 27, and a handle 28. The handle 28 is provided at one end of the rod 26, and two limiting rings 27 are provided in the middle of the rod 26. The integrated plate 23 has a locking hole, and the rod 26 of the pin 20 passes through the locking hole. The limiting rings 27 are respectively provided on the rod 26 on both sides of the locking hole. Alternatively, the limiting ring 27 near the handle 28 can be omitted, and the locking is achieved by the handle 28. A spring can also be installed on the insert rod 26 between the limiting ring 27 and the integrated plate 23 on the side away from the handle 28 to make the locking more reliable. The unfolding and folding locking of the multi-function plate 5 can be controlled by holding the pin 20. Preferably, two sets of pins 20 are provided for easy holding with both hands.

[0040] The steps for using this utility model are as follows:

[0041] PT Pull-out Operation: After power failure, open the PT cabinet door, push the auxiliary trolley to the front of the cabinet door, raise the bracket through the lifting rod 3 and hand crank mechanism 4, push the trolley to extend the multi-functional board 5 into the cabinet to complete the docking, fix the trolley and lower the bracket to be flush with the bottom sill of the cabinet door, pull the PT onto the bracket (at this time, the PT can be fixed through the limit holes and screws on the bracket), raise the bracket and pull out the trolley through the handle, fold the multi-functional board 5 upward and lock it to form a protective structure (you can choose to lower the bracket to fit against the frame to reduce the support burden on the bracket), and transfer the trolley to the designated position.

[0042] PT insertion operation: Before powering on, open the PT cabinet door, push the auxiliary trolley carrying the PT to the front of the cabinet door, unfold the multi-function board 5, insert the multi-function board 5 into the cabinet to complete the docking, fix the trolley, adjust the bracket to be flush with the bottom sill of the cabinet door (pull out the screw on the upper limit hole of the bracket to release the PT lock), push the PT to the working position, and finally transfer the trolley to the designated position.

[0043] In the description of this utility model, unless otherwise stated, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third," used only for descriptive purposes, should not be construed as indicating or implying relative importance.

[0044] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A 10kV switch incoming line PT operation auxiliary trolley, comprising a frame and a bracket, wherein the frame is provided with directional wheels (1) and universal wheels (2) with brakes, a handrail is provided on the rear side of the frame, and the bracket is mounted on the frame and can be raised and lowered, characterized in that: It also includes a lifting rod (3), a hand crank mechanism (4), and a multi-functional board (5); The rear side of the frame is provided with a slide rail (6), and a lifting rod (3) is rotatably arranged in the slide rail (6). The lifting rod (3) is provided with a thread. The rear side of the bracket is provided with a slider (7) that is threadedly connected to the lifting rod (3). The frame is provided with a hand crank mechanism (4), which is connected to the lifting rod (3). The lifting rod (3) is manually controlled to rotate by the hand crank mechanism (4), thereby driving the bracket to rise and fall. The bracket is hinged to a multi-functional plate (5) on the front side. The multi-functional plate (5) can be unfolded parallel to the upper surface of the bracket or folded upward at 90° and locked. When the multi-functional plate (5) is unfolded, its front end extends out of the frame. The width of the multi-functional plate (5) is the same as the width of the PT cabinet opening to be installed. The left and right sides of the front end of the multi-functional plate (5) are chamfered respectively.

2. The 10kV switch incoming line PT operation auxiliary trolley according to claim 1, characterized in that: The frame includes a base frame (8) and uprights (9). The uprights (9) are respectively installed on the rear, left and right sides of the base frame (8). The bracket is inserted between the three sets of uprights (9). The lifting rod (3) and the hand crank mechanism (4) are installed on the uprights (9) located on the rear side of the base frame (8).

3. The 10kV switch incoming line PT operation auxiliary trolley according to claim 2, characterized in that: The support frame (9) includes two parallel columns (10) and a crossbar (11) connecting the upper ends of the two columns (10). A slide (6) is formed between the two columns (10). The rear, left and right sides of the bracket are respectively provided with sliders (7) corresponding to the slide (6). The slider (7) on the rear side of the bracket is provided with a threaded hole that is threadedly connected to the lifting rod (3).

4. The 10kV switch incoming line PT operation auxiliary trolley according to claim 3, characterized in that: The horizontal bar (11) of the rear support frame (9) of the bottom frame (8) is provided with a handrail (12) on the left and right sides respectively. The handrail (12) is covered with a protective sleeve (13). The horizontal bar (11) of the left and right support frames (9) of the bottom frame (8) extends backward and connects with the handrail (12).

5. The 10kV switch incoming line PT operation auxiliary trolley according to claim 3, characterized in that: A seat plate (14) is provided on the crossbar (11) of the rear upright (9) of the bottom frame (8). Seat plates (14) are provided on the front and rear sides of the crossbar (11). The hand crank mechanism (4) is installed on the seat plate (14). The lower end of the lifting rod (3) is rotatably connected to the bottom frame (8), and the upper end passes through the crossbar (11) of the rear upright (9) of the bottom frame (8) and is connected to the hand crank mechanism (4).

6. The 10kV switch incoming line PT operation auxiliary trolley according to claim 1, characterized in that: The hand crank mechanism (4) includes a turbine box (15) and a hand crank (16) located on one side of the turbine box (15). The turbine inside the turbine box (15) is connected to the lifting rod (3), and the worm gear is connected to the hand crank (16).

7. The 10kV switch incoming line PT operation auxiliary trolley according to any one of claims 1-6, characterized in that: The bracket includes a bracket (17) and a tray (18) disposed on the bracket (17). A step (19) is formed between the front side of the bracket (17) and the frame. The multi-functional plate (5) is hinged to the front side of the bracket (17) and is provided with a pin (20). When the multi-functional plate (5) is unfolded, it abuts against the step (19). When it is folded upward 90°, it abuts against the front end of the bracket (17) and the tray (18) and is locked by the pin (20).

8. The 10kV switch incoming line PT operation auxiliary trolley according to claim 7, characterized in that: The front side of the support frame (17) is provided with multiple first ear plates (21), and the multi-functional plate (5) is provided with second ear plates (22) that correspond one-to-one with the first ear plates (21). A hinge rod is provided between the first ear plate (21) and the second ear plate (22), and the first ear plate (21) and the second ear plate (22) are rotatably connected by the hinge rod.

9. The 10kV switch incoming line PT operation auxiliary trolley according to claim 8, characterized in that: The multi-functional plate (5) has an integrated plate (23) at its rear end. Multiple stiffeners (24) are provided between the integrated plate (23) and the multi-functional plate (5). The second ear plate (22) is provided on the integrated plate (23). The pin (20) is provided on the integrated plate (23). The frame is provided with a lock hole (25) for receiving the pin (20).

10. The 10kV switch incoming line PT operation auxiliary trolley according to claim 9, characterized in that: The pin (20) includes a rod (26), a limiting ring (27) and a handle (28). The handle (28) is provided at one end of the rod (26), and two limiting rings (27) are provided in the middle of the rod (26). The integrated plate (23) is provided with a socket, and the rod (26) of the pin (20) is inserted into the socket. The limiting rings (27) are respectively provided on the rods (26) on both sides of the socket.

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